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Adding basic structure support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26505 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-03-03 15:06:57 +00:00
parent 3e1ce5a44d
commit f01e547700
3 changed files with 54 additions and 10 deletions
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43
lib/CodeGen/DwarfWriter.cpp
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@ -41,6 +41,8 @@ class CompileUnit;
class DIE;
//===----------------------------------------------------------------------===//
// CompileUnit - This dwarf writer support class manages information associate
// with a source file.
class CompileUnit {
private:
CompileUnitDesc *Desc; // Compile unit debug descriptor.
@ -505,6 +507,13 @@ void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
case DW_FORM_data8: DW.EmitInt64(Integer); break;
case DW_FORM_udata: DW.EmitULEB128Bytes(Integer); break;
case DW_FORM_sdata: DW.EmitSLEB128Bytes(Integer); break;
// FIXME - Punting on field offsets.
case DW_FORM_block1: {
DW.EmitInt8(1 + DW.SizeULEB128(Integer)); DW.EOL("Form1 Size");
DW.EmitInt8(DW_OP_plus_uconst); DW.EOL("DW_OP_plus_uconst");
DW.EmitULEB128Bytes(Integer);
break;
}
default: assert(0 && "DIE Value form not supported yet"); break;
}
}
@ -520,6 +529,8 @@ unsigned DIEInteger::SizeOf(const DwarfWriter &DW, unsigned Form) const {
case DW_FORM_data8: return sizeof(int64_t);
case DW_FORM_udata: return DW.SizeULEB128(Integer);
case DW_FORM_sdata: return DW.SizeSLEB128(Integer);
// FIXME - Punting on field offsets.
case DW_FORM_block1: return 2 + DW.SizeULEB128(Integer);
default: assert(0 && "DIE Value form not supported yet"); break;
}
return 0;
@ -1117,10 +1128,36 @@ DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc) {
break;
}
case DW_TAG_structure_type: {
break;
}
case DW_TAG_structure_type:
case DW_TAG_union_type: {
// FIXME - this is just the basics.
// Add elements to structure type.
for(unsigned i = 0, N = Elements.size(); i < N; ++i) {
DerivedTypeDesc *MemberDesc = cast<DerivedTypeDesc>(Elements[i]);
const std::string &Name = MemberDesc->getName();
unsigned Line = MemberDesc->getLine();
TypeDesc *MemTy = MemberDesc->getFromType();
uint64_t Size = MemberDesc->getSize();
uint64_t Offset = MemberDesc->getOffset();
DIE *Member = new DIE(DW_TAG_member);
if (!Name.empty()) Member->AddString(DW_AT_name, DW_FORM_string, Name);
if (CompileUnitDesc *File = MemberDesc->getFile()) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
int Line = TyDesc->getLine();
Member->AddUInt(DW_AT_decl_file, 0, FileID);
Member->AddUInt(DW_AT_decl_line, 0, Line);
}
if (TypeDesc *FromTy = MemberDesc->getFromType()) {
Member->AddDIEntry(DW_AT_type, DW_FORM_ref4,
NewType(Context, FromTy));
}
// FIXME - Punt on the Address.
Member->AddUInt(DW_AT_data_member_location, DW_FORM_block1,
Offset >> 3);
Ty->AddChild(Member);
}
break;
}
case DW_TAG_enumeration_type: {